fix epsilons for several gpu tests

(cherry picked from commit 3e4bb371c8)

modules/gpu/test/test_color.cpp

@@ -715,7 +715,7 @@ GPU_TEST_P(CvtColor, BGR2YCrCb)
     cv::Mat dst_gold;
     cv::cvtColor(src, dst_gold, cv::COLOR_BGR2YCrCb);
 
-    EXPECT_MAT_NEAR(dst_gold, dst, 1.0);
+    EXPECT_MAT_NEAR(dst_gold, dst, depth == CV_32F ? 1e-2 : 1);
 }
 
 GPU_TEST_P(CvtColor, RGB2YCrCb)
@@ -728,7 +728,7 @@ GPU_TEST_P(CvtColor, RGB2YCrCb)
     cv::Mat dst_gold;
     cv::cvtColor(src, dst_gold, cv::COLOR_RGB2YCrCb);
 
-    EXPECT_MAT_NEAR(dst_gold, dst, 1.0);
+    EXPECT_MAT_NEAR(dst_gold, dst, depth == CV_32F ? 1e-2 : 1);
 }
 
 GPU_TEST_P(CvtColor, BGR2YCrCb4)
@@ -749,7 +749,7 @@ GPU_TEST_P(CvtColor, BGR2YCrCb4)
     cv::split(h_dst, channels);
     cv::merge(channels, 3, h_dst);
 
-    EXPECT_MAT_NEAR(dst_gold, h_dst, 1.0);
+    EXPECT_MAT_NEAR(dst_gold, h_dst, depth == CV_32F ? 1e-2 : 1);
 }
 
 GPU_TEST_P(CvtColor, RGBA2YCrCb4)
@@ -771,7 +771,7 @@ GPU_TEST_P(CvtColor, RGBA2YCrCb4)
     cv::split(h_dst, channels);
     cv::merge(channels, 3, h_dst);
 
-    EXPECT_MAT_NEAR(dst_gold, h_dst, 1.0);
+    EXPECT_MAT_NEAR(dst_gold, h_dst, depth == CV_32F ? 1e-2 : 1);
 }
 
 GPU_TEST_P(CvtColor, YCrCb2BGR)

modules/gpu/test/test_core.cpp

@@ -3582,7 +3582,7 @@ GPU_TEST_P(Normalize, WithOutMask)
     cv::Mat dst_gold;
     cv::normalize(src, dst_gold, alpha, beta, norm_type, type);
 
-    EXPECT_MAT_NEAR(dst_gold, dst, 1.0);
+    EXPECT_MAT_NEAR(dst_gold, dst, type < CV_32F ? 1.0 : 1e-4);
 }
 
 GPU_TEST_P(Normalize, WithMask)
@@ -3598,7 +3598,7 @@ GPU_TEST_P(Normalize, WithMask)
     dst_gold.setTo(cv::Scalar::all(0));
     cv::normalize(src, dst_gold, alpha, beta, norm_type, type, mask);
 
-    EXPECT_MAT_NEAR(dst_gold, dst, 1.0);
+    EXPECT_MAT_NEAR(dst_gold, dst, type < CV_32F ? 1.0 : 1e-4);
 }
 
 INSTANTIATE_TEST_CASE_P(GPU_Core, Normalize, testing::Combine(

modules/gpu/test/test_gpumat.cpp

@@ -281,7 +281,7 @@ GPU_TEST_P(ConvertTo, WithOutScaling)
         cv::Mat dst_gold;
         src.convertTo(dst_gold, depth2);
 
-        EXPECT_MAT_NEAR(dst_gold, dst, 1.0);
+        EXPECT_MAT_NEAR(dst_gold, dst, depth2 < CV_32F ? 1.0 : 1e-4);
     }
 }